Xapian devel - Jul 2005 - Problem with Perl bindings (enquire)

Hello list,

 looks like one can open a Xapian database in read-only mode and do the
following:

 $db = Search::Xapian::Database->new("/foo/bar/");
 $enq = $db->enquire("XIDblub");

the same doesn't seem to be possible with a database opened in read-write
mode:

 $db = Search::Xapian::WritableDatabase->new("/foo/bar/",
                                             Search::Xapian::DB_CREATE_OR_OPEN);
 $enq = $db->enquire("XIDblub");

I first thought that this would be caused by a missing wrapper in
Search::Xapian::WritableDatabase but when i duplicate the code from
Search::Xapian::Database i get the following error:

  Search::Xapian::Enquire::new() -- databases is not a
  "Search::Xapian::Database" object at ./indexer.pl line 241.

This is pretty disappointing since fetching a document by index-term
is rather neccessary during indexing -- or how should one fetch a document
to replace it during re-indexing without enquires to the database?

 TIA Ralf Mattes

On Fri, Jul 15, 2005 at 02:11:36AM +0200, R. Mattes
wrote:
> I first thought that this would be caused by a missing wrapper in
> Search::Xapian::WritableDatabase but when i duplicate the code from
> Search::Xapian::Database i get the following error:
> 
>   Search::Xapian::Enquire::new() -- databases is not a
>   "Search::Xapian::Database" object at ./indexer.pl line 241.
Instead (or maybe as well) you'll need to tell Perl that
WritableDatabase is a subclass of Database.  To do this edit
Xapian/WritableDatabase.pm and add 'Search::Xapian::Database' to
"@ISA".

Let me know if you find out what's required to get this working...
> This is pretty disappointing since fetching a document by index-term
> is rather neccessary during indexing -- or how should one fetch a document
> to replace it during re-indexing without enquires to the database?
No, it should work as you expect - it's just not wrapped correctly at
the moment.

Cheers,
    Olly

> This is pretty disappointing since fetching a document by index-term
> is rather neccessary during indexing -- or how should one fetch a document
> to replace it during re-indexing without enquires to the database?
You may use "replace_document" method of Xapian::WriteableDatabase, if
you know document id. Or you have a set of terms neither set of document ids in
your indexer?

-- 
WBR dyker
Agava Software